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diff --git a/vendor/backtrace/README.md b/vendor/backtrace/README.md new file mode 100644 index 000000000..cd80a697c --- /dev/null +++ b/vendor/backtrace/README.md @@ -0,0 +1,73 @@ +# backtrace-rs + +[Documentation](https://docs.rs/backtrace) + +A library for acquiring backtraces at runtime for Rust. This library aims to +enhance the support of the standard library by providing a programmatic +interface to work with, but it also supports simply easily printing the current +backtrace like libstd's panics. + +## Install + +```toml +[dependencies] +backtrace = "0.3" +``` + +## Usage + +To simply capture a backtrace and defer dealing with it until a later time, +you can use the top-level `Backtrace` type. + +```rust +use backtrace::Backtrace; + +fn main() { + let bt = Backtrace::new(); + + // do_some_work(); + + println!("{:?}", bt); +} +``` + +If, however, you'd like more raw access to the actual tracing functionality, you +can use the `trace` and `resolve` functions directly. + +```rust +fn main() { + backtrace::trace(|frame| { + let ip = frame.ip(); + let symbol_address = frame.symbol_address(); + + // Resolve this instruction pointer to a symbol name + backtrace::resolve_frame(frame, |symbol| { + if let Some(name) = symbol.name() { + // ... + } + if let Some(filename) = symbol.filename() { + // ... + } + }); + + true // keep going to the next frame + }); +} +``` + +# License + +This project is licensed under either of + + * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or + https://www.apache.org/licenses/LICENSE-2.0) + * MIT license ([LICENSE-MIT](LICENSE-MIT) or + https://opensource.org/licenses/MIT) + +at your option. + +### Contribution + +Unless you explicitly state otherwise, any contribution intentionally submitted +for inclusion in backtrace-rs by you, as defined in the Apache-2.0 license, shall be +dual licensed as above, without any additional terms or conditions. |